I would advise that you check your product ingredients and eliminate any products containing protein for a few days to see if there is any difference. Often an overdose of protein can cause the problems you describe.
Also, I suggest using conditioner on your second day hair. You can mix up a half conditioner half water combo in a spray bottle and spray it on your hair. Adding more moisture more often may help. And, sealing with a dab of oil can help to hold more moisture in your hair.
Experimenting with too many products to name here. All this great info keeps my head spinning.